Piston ring



March 9 1926. 1,576,402

R.S.BOLENBAUGH PISTON RING Filed Dec. 12, 1924 Patented Mar. 9, 1926.

UNITED STATES PATENT OFFICE.

RAY S. BOLENIBAUGH, OF JACKSON, MICHIGAN, ASSIGNOB OF "ONE-THIRD TO BURTON B. BOLENBAUGH AND ONE-THIRD T C YRUS BOLENBAUGH, BOTH OF JACKSON,

mrcnreen.

PISTON RING.

Application filed December 12, 1924. Serial No. 755,545.

To all wiz om it may concern: I

Be it known that I, RAY S. BOLENBAUGH, a citizen of the United States, residing at Jackson, in the county of Jackson and State 5 of Michigan, have invented new and useful Improvements in Piston Rings, of which the following is a specification.

This invention relates to a piston ring, the general object oftthe invention being to pro- 1 vide a piston ring which is so constructed that it will prevent leakage between a piston and the cyhnder walls and at the same time.

have great durability.

This invention also consists in certaln 1 other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illus trated in the accompanying drawings and specifically pointed out in the appended claim.

' In describing my invention in detail, refenence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a plan view of the improved ring and its spring.

Figure 2 is a transverse sectional yiew through a portion of a cylinder and a plston and showing theimproved ring in use.

Figure 3 is a perspective view of the spring of the ring.

Figure 4 is a perspective view of portion of the ring. I

As shown in these views. the ring is composed of a section 1 which has its inner wall of wedge-shape, as shown at- 2, and the sections 3 and 4, each of which is but half the width ofthe section 1 and has one face 40 beveled to engage a wall of the .wedgeshaped part of the section 1. The ring is held expanded by a spring, such as shown at 5. The section 1 may be provided with the usual lap joint which is shown at 6 in a Figure 1, w

inclined walls of the ile the ends of the sections 3 I and 4 are spaced apart, as shown at 7, in Figures 1 and4.

From the foregoing it will be seen that the spring 5 will not only hold the ring expanded in the groove of the piston A so that the outer face of the section 1 will be pressed against thewall of cylinder B, as shown in Figure 2, but this spring acting on sections 3 upon the wedge-shaped inner edge of the section 1 and thus engage the side walls of the ring groove of the piston. Thus a leak proof ring is provided which will prevent leakage not only through the space between the piston and cylinder but it will also prevent leakage between the ring and the walls of the ring just themselves to groove. The parts will also aduse of the ring.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

deslre it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

at Iclaim is:-

A piston ring including an outer section having its ends formed with a lap'joint, and its inner wall wedged shaped forming oppositely inclined walls, a pair of inner sections each being one 'half the width of'the first section and each having their ends spaced apart and provided upon their outer face with beveled portions adapted to engage one of the inclined section and an irregular spring member arranged within the piston ring with several points thereof engaging the inner sections to normally retain them in contact with the outer section. 5

In testimony whereof I afiix my signature.

RAY. S. BOLENBAUGH.

and 4 will cause them to move wear and thus insure long walls of the outer 

